No steam overlay jump out in standlone game in UE4.16

I setup the game project and engine folder, according to the tutorial
[link text][1]

But I start the game in standlone game, no steam overlay jump out in the game. Also packaging the shipping build no steam overlay come out.
Anyone could help me?
Thank you so much.
Here is setting snapshot:
dll:

target.cs:

274220-targetcs.png

build.cs:

ini:

Plugin: